BASF

Last updated January 31, 2026

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Bismuth aromatic mercapto catalyst system: BASFRecent Research Landscape

Poor adhesion and premature gelation in cathodic electrodeposition lead to coating delamination and surface defects. These innovations utilize bulky aromatic bismuth substituents to control catalytic reactivity and promote interfacial bonding with polyurethane systems.

What technical problems is BASF addressing in Bismuth aromatic mercapto catalyst system?

Metallic surface corrosion degradation

(20)evidences

Insufficient bonding between cathodic electrodeposition layers and subsequent polyurethane topcoats. Improving interfacial strength prevents delamination in multi-layer coating systems.

Surface adhesion and scratch vulnerability

(19)evidences

The primary failure mode is the loss of optical clarity due to moisture exposure or chemical instability in hydroxyalkylamide systems. Preventing this degradation ensures long-term aesthetic integrity and environmental resistance.